Ningbo Baocheng Electronics CO.,LTD

Points of attention for the control circuit of  Power Relay : When the relay contacts are connected to the AC power phase, the electrical life may be extremely reduced. 1. When the relay is turned ON or OFF using the SCR, half-wave rectification is used directly in the power supply, and the recovery of the SCR can be easily performed. 2. In this case, the operating time and reset time of the relay are easily synchronized with the power supply frequency, and the time during which the load is turned on and off is also easily synchronized. 3. When the load is a large current load such as a heater, the relay contact may be turned on and off only at the peak, and may only be turned on and off at zero phase. Therefore, it is prone to extreme deviations in life and extremely short life, so the initial machine quality inspection is very important. 4. The relay for driving the relay P/C board by the external contact has the characteristics of high sensitivity and high-speed operation

The  Automotive Relay  can be thought of as a collection of two parts: the control circuit that works with the coil and the main circuit that works with the contacts. In the control circuit of the relay, there is only a small operating current. This is because the contact capacity of the steering switch is small and cannot be used to directly control the load with a large amount of power. It can only be controlled by the contacts of the relay. On and off. The Automotive Relay is both a control switch and a control object (actuator). Take the fuel pump relay as an example, it is the control switch of the fuel pump, but the coil of the fuel pump relay can only form a loop through the grounding point of the electronic control unit when the driving transistor is turned on in the electronic control unit. According to the main function differences, the Automotive Relay can be divided into the following types: 1 electrical switch type relay. For example, the fuel pump relay of the AJR

Relays  play a central role in systems consisting of relay technologies, such as relay interlocking, relay semi-automatic occlusion, etc. These systems are still in large numbers and will be used for quite a long period of time. In the system consisting of electronic components and microcomputers, such as computer interlocking, multi-information automatic blocking, general locomotive signal, hump automation and other systems, as the interface components, the system host and signal, track circuit, transfer Machine and other execution components are combined. Next, I will give you a brief description of how the relays are wired. 1. Control wiring: Think of it as a DC relay. 3.7 is used to connect 12V control voltage; 2.7 is used to connect 24V control voltage. Among them, 7 is regarded as the negative pole of direct current, and is connected to the neutral line when in use. 2 connected to the 220V fire line. 2. Work control: Although the control voltage is connected, it is controlle

What are the methods for  Relay Debugging ? The following small series explains for you: 1. Before using the relay, check whether there is any damage caused during transportation. Set the relay to the first setting point, turn the movable system to the magnetic pole direction by hand, and then release it. The movable system should be turned back to the original. Position until the stop. 2. When the relay is re-adjusted, it must be guaranteed: a, the axial movement of the movable system is between 0.15 ~ 0.25mm; b. The air gap between the moving piece and the magnetic pole should be uniform. Under any action, the moving piece and the magnetic pole should not touch each other; c. During the action, the movable system must not be stuck in the middle position; d. When the pointer is rotated from the first scale to the maximum scale, the loops of the hairspring shall not touch each other; e. When the contact is in the open position, the total air gap between the static and dy

Usually, the same text symbol is marked on the side of the same relay and the coil, and the contact group is numbered to show the difference. So, do you know which types of relays are in contact? Let's take a look at it! There are three basic forms of relay contacts: 1. When the moving type (normally open) (H type) coil is not energized, the two contacts are disconnected. After energization, the two contacts are closed. It is represented by the pinyin head "H" of the word. 2. When the break type (normally closed) (D type) coil is not energized, the two contacts are closed, and the two contacts are disconnected after power-on. It is represented by the pinyin head "D" of the hyphenation. 3. Conversion type (Z type) This is the contact type. This contact group has three contacts, that is, the middle is a moving contact, and one static contact is provided. When the coil is not energized, the movable contact and one of the static contacts are opened and the

Once the voltage applied to the coil is insufficient, the  Power Relay  will not work, or the operation will be unstable, which will cause the durability of the contact to decrease or the contact point such as welding to be blocked. In particular, in a large motor or the like, when the power is turned on, the voltage applied to the relay coil sometimes drops at the moment of a load operation in which a large inrush current is generated. If the relay is operated in a low voltage state, even if it is a vibration or shock value within the specifications specified in the specifications and catalogues, the relay may malfunction. Therefore, apply a rated voltage to the coil of the relay. For fluctuations in the power supply voltage, apply a voltage to the coil that each relay can fully operate. If a voltage is applied to the coil that does not allow the relay to fully operate, the coil will be abnormally heated, causing the coil to burn out. In addition, if a motor, a solenoid, a transforme

Once the voltage applied to the coil is insufficient, the  Power Relay  will not work, or the operation will be unstable, which will cause the durability of the contact to decrease or the contact point such as welding to be blocked. In particular, in a large motor or the like, when the power is turned on, the voltage applied to the Power Relay coil sometimes drops at the moment of a load operation in which a large inrush current is generated. If the Power Relay operates in a low voltage state, even if it is a vibration or shock value within the specifications specified in the specifications and catalogues, the relay may malfunction. Therefore, apply a rated voltage to the coil of the relay. For fluctuations in the power supply voltage, apply a voltage to the coil that each relay can fully operate. If a voltage is applied to the coil that does not allow the relay to fully operate, the coil will be abnormally heated, causing the coil to burn out. In addition, if a motor, a solenoi